Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

finishing.com -- The Home Page of the Finishing Industry

The authoritative public forum
for Metal Finishing since 1989
-----

Rough finish in hard chromium plating

I am Venketrajan working in a plating shop in a private organization in India.

The problem is that we are getting rough finish at outside of the hard chrome plated rings with dia. 36 mm and 40 mm. We are using separate tin lead anodes for inside and outside of the component. The roughness occurs at outside only that is too near the jigging area.

The current density is normal and also the bath parameters are within the tolerable limits.

Can I know the reason for this problem and how to overcome it.

Thanks with Regards,

Venketrajan Ramalingam
plating shop employee - Coimbatore, Tamilnadu, India
March 28, 2009

Hi, Venketrajan. My initial reading is that this is simply a classical case of burning, since you note how close the anode is to this area. Please investigate putting "thieves" on your racks.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
April 3, 2009

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: